the hollow under the arm where it is joined to the shoulder;
\\\"they were up to their armpits in water\\\"
造句
用作名詞(n.)
Proper placement of the axillary roll is under the thorax caudad to the axilla. 腋窩卷的正確使用方法，是放在腋窩的尾端的胸廓下。
Supporting the patient\\\'s arm during the axillary examination allows the arm to be fully relaxed so that nodes deep within the axilla can be palpated. 腋下檢查時(shí)，支撐病人手臂，使其充分放松，這樣就可以摸到腋窩深處的淋巴結(jié)。